Drinking water quality in your water system is tested for many chemical constituents as required by state and federal regulations. This report shows monitoring results for the period from 2017-01-01 to 2019-08-23.
Este informe contiene información muy importante sobre su agua para beber. Favor de comunicarse ALAMEDA COUNTY WATER DISTRICT a 510-668-4201 para asistirlo en español.
这份报告含有关于您的饮用水的重要讯息。请用以下地址和电话联系 ALAMEDA COUNTY WATER DISTRICT 以获得中文的帮助: 510-668-4201.
ALAMEDA COUNTY WATER DISTRICT is located in FREMONT (ALAMEDA CO.).
The primary water source type is Surface Water.
This water system services 84,730 connections, and serves a total population of 351,000 individuals.
Of the 177 chemicals tested for in your water system, 18 chemicals were detected, and 4 average annual chemical findings exceeded their MCL, though this dos not necessarily constitute an MCL violation \(^*\).
In the plot below, the Maximum Contaminant Level (MCL) is shown as a black horizontal dashed line. Each contaminant tested for in your water utility is represented by a vertical bar, and the height of the bar indicates the level of contaminantion of that sample. Any contaminant at or exceeding the black horizontal dashed line indicates contaminated water, and values under the black line indicate safe drinking water.
Hover over the bars to see more information for each contaminant.
159 other chemicals were tested for and NOT detected, including:
1,1-DICHLOROETHANE, 1,1-DICHLOROETHANE, 1,1-DICHLOROETHYLENE, 1,1-DICHLOROETHYLENE, 1,1,1-TRICHLOROETHANE, 1,1,1-TRICHLOROETHANE, 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE, 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE, 1,1,2-TRICHLOROETHANE, 1,1,2-TRICHLOROETHANE, 1,1,2,2-TETRACHLOROETHANE, 1,1,2,2-TETRACHLOROETHANE, 1,2-DICHLOROBENZENE, 1,2-DICHLOROBENZENE, 1,2-DICHLOROETHANE, 1,2-DICHLOROETHANE, 1,2-DICHLOROPROPANE, 1,2-DICHLOROPROPANE, 1,2,3-TRICHLOROPROPANE, 1,2,4-TRICHLOROBENZENE, 1,2,4-TRICHLOROBENZENE, 1,3-DICHLOROPROPENE (TOTAL), 1,3-DICHLOROPROPENE (TOTAL), 1,4-DICHLOROBENZENE, 1,4-DICHLOROBENZENE, 2,3,7,8-TCDD (DIOXIN), 2,3,7,8-TCDD (DIOXIN), 2,4-D, 2,4-D, 2,4,5-TP (SILVEX), 2,4,5-TP (SILVEX), ALACHLOR, ALACHLOR, ALUMINUM, ANTIMONY, ANTIMONY, ARSENIC, ASBESTOS, ATRAZINE, ATRAZINE, BARIUM, BENTAZON, BENTAZON, BENZENE, BENZENE, BENZO (A) PYRENE, BENZO (A) PYRENE, BERYLLIUM, BERYLLIUM, CADMIUM, CADMIUM, CARBOFURAN, CARBON TETRACHLORIDE, CARBON TETRACHLORIDE, CHLORDANE, CHLORDANE, CHROMIUM (TOTAL), CHROMIUM (TOTAL), CIS-1,2-DICHLOROETHYLENE, CIS-1,2-DICHLOROETHYLENE, COLOR, COPPER, COPPER, CYANIDE, DALAPON, DALAPON, DI(2-ETHYLHEXYL)ADIPATE, DI(2-ETHYLHEXYL)ADIPATE, DI(2-ETHYLHEXYL)PHTHALATE, DI(2-ETHYLHEXYL)PHTHALATE, DIBROMOCHLOROPROPANE (DBCP), DIBROMOCHLOROPROPANE (DBCP), DICHLOROMETHANE, DICHLOROMETHANE, DINOSEB, DINOSEB, DIQUAT, ENDOTHALL, ENDRIN, ENDRIN, ETHYLBENZENE, ETHYLBENZENE, ETHYLENE DIBROMIDE (EDB), ETHYLENE DIBROMIDE (EDB), FLUORIDE (F) (NATURAL-SOURCE), FOAMING AGENTS (MBAS), GLYPHOSATE, GROSS ALPHA, HEPTACHLOR, HEPTACHLOR, HEPTACHLOR EPOXIDE, HEPTACHLOR EPOXIDE, HEXACHLOROBENZENE, HEXACHLOROBENZENE, HEXACHLOROCYCLOPENTADIENE, HEXACHLOROCYCLOPENTADIENE, IRON, LINDANE, LINDANE, MANGANESE, MERCURY, MERCURY, METHOXYCHLOR, METHOXYCHLOR, METHYL-TERT-BUTYL-ETHER (MTBE), METHYL-TERT-BUTYL-ETHER (MTBE), MOLINATE, MOLINATE, MONOCHLOROBENZENE, MONOCHLOROBENZENE, NICKEL, NICKEL, NITRATE (AS N), NITRATE + NITRITE (AS N), NITRITE (AS N), NITRITE (AS N), ODOR THRESHOLD @ 60 C, OXAMYL, PENTACHLOROPHENOL, PENTACHLOROPHENOL, PERCHLORATE, PERCHLORATE, PICLORAM, PICLORAM, POLYCHLORINATED BIPHENYLS, TOTAL, AS DCB, POLYCHLORINATED BIPHENYLS, TOTAL, AS DCB, SELENIUM, SELENIUM, SILVER, SILVER, SIMAZINE, SIMAZINE, STYRENE, STYRENE, TETRACHLOROETHYLENE, TETRACHLOROETHYLENE, THALLIUM, THALLIUM, THIOBENCARB, THIOBENCARB, TOLUENE, TOLUENE, TOTAL TRIHALOMETHANES, TOXAPHENE, TOXAPHENE, TRANS-1,2-DICHLOROETHYLENE, TRANS-1,2-DICHLOROETHYLENE, TRICHLOROETHYLENE, TRICHLOROETHYLENE, TRICHLOROFLUOROMETHANE, TRICHLOROFLUOROMETHANE, TURBIDITY, LABORATORY, URANIUM (PCI/L), VINYL CHLORIDE, VINYL CHLORIDE, XYLENES (TOTAL), XYLENES (TOTAL), ZINC, ZINC.
Because they were not detected, these chemicals are not included in the chart above.
The following 101 water quality indicators were tested for in your system and, may have been detected (see the table below), though they pose no serious human health hazard, and hence have an MCL of 0:
1,1-DICHLOROPROPENE, 1,1,1,2-TETRACHLOROETHANE, 1,2,3-TRICHLOROBENZENE, 1,2,4-TRIMETHYLBENZENE, 1,3-DICHLOROBENZENE, 1,3-DICHLOROPROPANE, 1,3,5-TRIMETHYLBENZENE, 2-CHLOROTOLUENE, 2,2-DICHLOROPROPANE, 4-CHLOROTOLUENE, ACIFLURFEN, AGGRSSIVE INDEX (CORROSIVITY), ALDRIN, ALKALINITY (TOTAL) AS CACO3, ALKALINITY (TOTAL) AS CACO3, BICARBONATE ALKALINITY, BICARBONATE ALKALINITY, BORON, BROMIDE, BROMIDE, BROMOBENZENE, BROMOCHLOROMETHANE, BROMODICHLOROMETHANE (THM), BROMODICHLOROMETHANE (THM), BROMOFORM (THM), BROMOFORM (THM), BROMOMETHANE, CALCIUM, CARBONATE ALKALINITY, CARBONATE ALKALINITY, CHLORATE, CHLOROETHANE, CHLOROFORM (THM), CHLOROFORM (THM), CHLOROMETHANE, CHROMIUM, HEXAVALENT, CHROMIUM, HEXAVALENT, CIS-1,3-DICHLOROPROPENE, CIS-1,3-DICHLOROPROPENE, COBALT, COBALT, DIBROMOCHLOROMETHANE (THM), DIBROMOCHLOROMETHANE (THM), DIBROMOMETHANE, DICAMBA, DICAMBA, DICHLORODIFLUOROMETHANE (FREON 12), DIELDRIN, DIISOPROPYL ETHER, ETHYL-TERT-BUTYL ETHER, GROSS ALPHA COUNTING ERROR, GROSS ALPHA MDA95, HARDNESS (TOTAL) AS CACO3, HEXACHLOROBUTADIENE, HYDROXIDE ALKALINITY, HYDROXIDE ALKALINITY, ISOPROPYLBENZENE, LANGELIER INDEX AT SOURCE TEMP., LEAD, LEAD, LITHIUM, M,P-XYLENE, M,P-XYLENE, MAGNESIUM, MOLYDBENDUM, MOLYDBENDUM, N-BUTYLBENZENE, N-PROPYLBENZENE (1-PHENYLPROPANE), NAPHTHALENE, O-XYLENE, O-XYLENE, P-ISOPROPYLTOLUENE, PCB-1016 (AS DECACHLOROBIPHENYL (DCB)), PCB-1221 (AS DCB), PCB-1232 (AS DCB), PCB-1242 (AS DCB), PCB-1248 (AS DCB), PCB-1254 (AS DCB), PCB-1260 (AS DCB), PH, FIELD, PHOSPHATE, ORTHO, PHOSPHATE, ORTHO, POTASSIUM, POTASSIUM, RADIUM 226, RADIUM 226 COUNTING ERROR, RADIUM 226 MDA95, RADIUM 228, RADIUM 228 COUNTING ERROR, RADIUM 228 MDA95, SEC-BUTYLBENZENE, SILICA, SODIUM, SOURCE TEMPERATURE C, TERT-AMYL-METHYL ETHER, TERT-BUTYL ALCOHOL, TERT-BUTYLBENZENE, TOTAL ORGANIC CARBON (TOC), TRANS-1,3-DICHLOROPROPENE, TRANS-1,3-DICHLOROPROPENE, VANADIUM.
Explore your water quality data in the interactive table below, or download as an Excel or CSV file.
: 43885 S GRIMMER BLVD FREMONT, CA 94538-6348
: 510-668-4201
: 850 MARINA BAY PARKWAY BLDG. P, SECOND F RICHMOND, CA 94804-6403
: 510-620-3474
: NA
This Consumer Confidence Report was automatically generated, and hence, the data herein may be incomplete or inaccurate. The authors claim no liability or responsibility for data quality. This data represents the average result of all post-treatment samples from the period from 2019-01-01 to 2019-08-23. For questions about your local water quality, contact your water system.
Maximum Contaminant Level (MCL) refers to the highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.
In Compliance: If a water system is “In Compliance” it means that the system is achieving compliance with the federal/state primary drinking water standards (i.e. MCL and TT requirements). For chronic contaminants, compliance is defined based on the running annual average (RAA), as specified in Section 64432 of Title 22 of the California Code of Regulations (CCR). For nitrate, compliance is based on quarterly monitoring as specified in Section 64432.1 of Title 22 of the CCR. To find out more about the types of contaminants and their associated MCLs, refer to the table of Maximum Contaminant Levels and Regulatory Dates for Drinking Water. There are certain state drinking water standards, such as perchlorate, which are more stringent than the federal drinking water standards.
Out of Compliance: If a water system is “Out-of-Compliance” it means that the system is currently in violation of one or more federal/state primary drinking water standard (i.e. MCL and TT requirements) and an enforcement action has been taken.
Returned to Compliance: If a water system has returned to compliance since January 1, 2012 it means the water system now meets federal/state primary drinking water standards (i.e. MCL and TT requirements), but did not in the recent past.
In the barplot and table above, XMOD indicates additional qualifiers on the data.
<: the measured amount did not constitute a chemical detectionV: valid data-: the data can be negative (e.g. radionuclides and Langelier index)F: false positiveI: invalidatedQ: questionable